Valve wrench



Aug. 2, 1932.

R. M, `-10N Es VALVE WRENCH Filed Aug. 2, 1930 'f'f ROBERT M. JONES, OF CHICAGO, ILLINOIS, "ASSIGNOR TO CRANE C0., OF CHICAGO,

Patented Aug. 2, 1932 vuNrrED STATES PATENT oFFlcE ILLINOIS, A CORPORATION' OF ILLINOIS` VALVE WRENCH Application filed August 2, 1930.r Serial No. 472,567.

This invention relates to a tool for yassembling and dissembling valve elements and more particularly to a wrench for removing body seat rings as applied to gate valves.

Heretofore it has been necessary to remove a gate valve, particularly those of larger sizes, from a pipe line when it is desired to replace the seating rings'therein. After removal of the valve from the line the rings have been removed by Spud wrenches inserted through the inlet or outlet of a valve. In the absence'of a spud wrench recourse has frequently been had to a hammer and punch or other similar device for unscrewing the valve seat rings. This latter method is of course very objectionable since it is extremely detrimental to the valve sea-t rings.

In many instances however it is very inconvenient if not impossible to remove the valve from service. It is the purpose of this invention therefore to provid-e a wrench by means of which valve seat rings may be removed and replaced in valve bodies without removing the valve from service. Accordingly a wrench is provided which has a head insertable through the body of the valve and which engages the valve seat ring. The wrench is provided with a handle which extends exteriorly of the valve body and by means of which the head portion may be rotated to unscrew the valve seat ring.

A better understanding of this invention will be had from the following description given in connection with the drawing, in which:

Fig. 1 is a section taken through the center of a typical valve showing a wrench constructed in accordance with this invention applied to a valve seat ring.

Fig. 2 is an end elevation of a wrench constructed in accordance with this invention.

Fig. 3 is a side elevation of the wrench shown in Figs. 1 and 2 illustrating the handle applied to the head.

Fig. 4 is a transverse sectiontaken through the center of the head portion of a modified form of wrench, and

Fig. 5 is an end elevation of the wrench head illustrated in Fig. 4.

Referring to the drawing and more particularly to Figs. 1'to 3 inclusive, itvwill be seen that the complete wrench comprises a circular disc-head land ahandle'Z, the head being ofv proper diameter Vto `fit within the l seating ring Yof the valve for which it is designed. l

In the illustrated -embodiment of this invention the seating rings 3 of the valve are provided with lugs 4 projecting from the inner annular surface of thering. This constructlon 1s customary 1n seating rings. 'Ace `cordingly the head or disc of the wrench is provided aroimd its periphery with notches 6,A equal in number to the lugs 4 and of suiiicient size to receive the latter. .Upon one face the disc is provided with a laterally extending fiange 7 which may be faced with a gasket S. The flange 7 prevents the disc from sliding through the valve seat and thel gasket 8 therein prevents the .face of the seating ring from being marr-ed.

The head is also provided with a plug 9 extending laterally from the center of one face thereof and over which a handle may be placed as will be explained hereafter; The same face of a disc is also provided with a plurality of apertures 11 which maybe engaged by a portion of the handle of the tool.

The handle comprisesl a substantially...

straight bar 2 provided with an aperture 12 upon one end thereof of suiiicient diameter to encircleplug 9. Adjacent the apertured end of therhandle and so positioned with respect thereto as` to enter apertures 11 is av post 13.

Itcan be'seen thereforethat when the handle i is placed over plug 9, post 13 may be engaged inany one ofthe series of apertures V11 to rotate the disc '1 and thereby unscrew the seating ring 1. .The apertures 11 are placed .gb

sufficiently closev together thatl the handle may be engaged' therein upon a limited throw of the handle, the throw being governed by hesize of the opening through the valve ody.

In the modification illustrated in Figs. 4 and 5,` there is shown a double or reversible tool adaptedl to be used for removing valve' seating rings formed'y with either recesses or lugs upon their inner peripheries. The head comprises a disc 16 which is providedwith a pair of plugs 17 one eXtending from each face for said head, and means for locking said of the disc. Each face of the disc is also handle to either side of said head in any one provided with a series of apertures 18. The of a plurality of positions. disc is provided with a centrally disposed In witness of the foregoing I aix my sig- 5 flange 19 projecting outwardly from the nature. center of the peripheral edge thereof each side of the flange being faced with a gasket 21. The peripheral edge lying upon one side of flange 19 is provided with a series of recessesQQ, whereas the peripheral edge upon Y 75 the other side of the flange is formed with -a series of projections 23, the projections 23 and recesses 22 are equal to the number of a recesses or projections formed in the valve j seating rings. 8o

It follows from the above that the head illustrated in Figs. l and 5 may be used with a handle Vas previously described to remove the valve seating rings having either recesses or lugs formed upon their inner peripheral 85 surface by merely using the proper side of the head.

From the foregoing description it can be seen that a valve wrench has been provided Y 25. which will permit the removal and insertion 90 ofpbody rings without the necessity of removal of the valvefrom service. rEhe disc being of proper size to substantially fit within the seating ring of the particular size o valve for which the tool is designed and the 95 handle being of thin proportions, the tool may be used in bodies'having a narrow body gauge and even in bodies having Voval necks as wellas round necks. The Vtool is very simple to make and cheap to manufacture. 100 It is obvious that slight changes may be made in the details of designwithout departing from the spirit and scope of this invention as defined in the claims appended o hereto.

I claim: 1. A valve wrench comprising a disc-like head of suitable diameter to be received within a valve seat ring when in position in a valve, said disc having a laterally projecting 110 flange arranged to abut the face of said ring when the head is inserted therein, a protective covering on said flange, means on said disc for engaging the inner surface of said ring, a handle for said head and means for locking f 115 said handle to said head in any one of a plurality of positions.

k2. A valve wrench adapted to be inserted in the valve bonnet opening of a valve to engage the seat ring therein comprising a 12u single disc-like head having a portion of suitable diameter to be snugly received within a valve seat ring when in position in a valve, said disc having a flange projecting laterally from substantially the center of its periph- 125 eral edge, the edge upon one side of said flange being provided with a series of projections extending outwardly therefroinand the edge upon the other side of said flange being providedwith a series of recesses, a handle l V v 130 ROBERT M. JONES. 

